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A．Because they pollute air.
B．Because they are natural hazards.
C．Because they are increasing in numbers.
D．Because people don't walk so often.
答案
更多“A．Because they pollute air.B．Because they are natural hazards.C．Because they are incre”相关的问题
第1题
The speaker worried about
A．smoking problem.
B．traffic problem.
C．sound pollution.
D．air pollution.
第2题
What is the most serious kind of pollution？
A．Noise pollution.
B．Air pollution.
C．Water pollution.
第3题
The main disadvantage of wind power is that it______.
A．is competitive
B．produces more pollutants
C．is low in efficiency
D．is ugly
第4题
A．Man knows where the society is going.
B．Man can do nothing about the problem of pollution.
C．The speaker is worried about the future of our modern society.
D．People don't welcome the rapid development of modern society.
第6题
【C4】
A．because that
B．because
C．that because
D．that
第8题
【C19】
A．because of
B．in case of
C．in spite of
D．but for
